Assuming stu1 and stu2 are UCSDStudent objects, write the most equivalent code fragment using a non-member method: if (stu1 == stu2) {
a) if (operator==(stu1, stu2))
b) if (equals(stu1, stu2))
c) if (compare(stu1, stu2))
d) if (stu1 == stu2)